<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right" class="breadcrumb">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
        <!-- 查询、添加商品 -->
        <el-row :gutter="20">
            <!-- 查询商品 -->
            <el-col :span="8">
                <el-input placeholder="请输入内容" @clear="getGoodsList"
                clearable v-model="queryInfo.query">
                    <el-button slot="append" icon="el-icon-search"
                    @click="getGoodsList"></el-button>
                </el-input>
            </el-col>
            <!-- 添加商品 -->
            <el-col :span="4">
                <el-button type="primary" @click="goAddpage">添加商品</el-button>
            </el-col>
        </el-row>
        <!-- table表格区域 -->
        <el-table :data="goodslist" border stripe>
            <el-table-column label="#" type="index"></el-table-column>
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格（元）" width="120px" prop="goods_price"></el-table-column>
            <el-table-column label="商品重量" width="80px" prop="goods_weight"></el-table-column>
            <el-table-column label="创建时间" width="140px" prop="add_time">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="130px">
                <template slot-scope="scope">
                    <!-- 编辑数据 -->
                    <el-button type="primary" 
                    icon="el-icon-edit" size="mini"></el-button>
                    <!-- 删除数据 -->
                    <el-button type="danger" @click="removeById(scope.row.goods_id)"
                    icon="el-icon-delete" size="mini"></el-button>
                </template>
            </el-table-column>
        </el-table>
        <!-- 分页区域 -->
        <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10 , 15 , 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total" background>
        </el-pagination>
    </el-card>
  </div>

</template>

<script>
export default {
  data() {
    return {
        // 查询参数对象
        queryInfo:{
            query:'',
            pagenum:1,
            pagesize:10
        },
        // 商品列表
        goodslist:[],
        // 总数据条数
        total:0,
    }
  },
  created() {
      this.getGoodsList();
  },
  methods: {
      async getGoodsList(){
          const {data:res}=await this.$http.get
          ('goods',{params:this.queryInfo});
          if(res.meta.status!==200){
              return this.$message.error('获取商品列表失败');
          }
          console.log(res.data);
          this.goodslist=res.data.goods;
          this.total=res.data.total;
      },
      handleSizeChange(newSize){
          this.queryInfo.pagesize=newSize;
          this.getGoodsList();
      },
      handleCurrentChange(newPage){
          this.queryInfo.pagenum=newPage;
          this.getGoodsList();
      },
      async removeById(id){
           // 弹框询问用户是否删除数据
        const confirmResult=await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err);
        // 如果用户确认删除则返回字符串 confirm
        // 如果用户取消删除则返回字符串 cancel
        if(confirmResult !=='confirm') return this.$message.info('已取消删除');
        // 删除用户
        const {data:res}=await this.$http.delete('goods/'+id)
        if(res.meta.status!==200) return this.$message.error('删除商品失败');
        this.$message.success('删除商品成功');
        this.getGoodsList();
      },
      goAddpage(){
          this.$router.push('/goods/add');
      }

  },
}
</script>

<style lang="less" scoped>
.el-table{
    font-size: 12px;
}
</style>